The image of an object form at the distance of distinct vision from the lens of a simple microscope of focal length 2.5cm. It magnifying power is ____.
Given v = +25cm
f = 2.5cm
To find :- magnification 1 m
Solution :- from lens formula
1v−1u=1f
−1u+125=1025
−1u=925⇒u=−259
magnification m=vu=2599×−25
m=−9